Chance from experiments, and predicting from it

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   Upright 4 | on its side 9 | on its cap 2. Jun flipped a water bottle and tallied how it landed. How many flips did Jun make in all?

   15
2. 2.

   Face up 11 | face down 7 | on its edge 1. Kira tossed a button and tallied how it landed (the edge row is a little lonely). How many tosses did Kira make in all?

   19
3. 3.

   Upright 10 | on its side 8 | on its cap 2. Noah flipped a water bottle 20 times. Based on the tally, what is the estimated chance that the next flip lands on its side, as a fraction in simplest form?

   2/5
4. 4.

   Face up 15 | face down 6 | on its edge 3. Pia tossed a button 24 times. Based on the tally, what is the estimated chance that the next toss lands face up, as a fraction in simplest form?

   5/8
5. 5.

   In the bucket 12 | missed 6. Ren tossed a bean bag into a bucket 18 times. Based on the tally, what is the estimated chance that the next toss goes in, as a fraction in simplest form?

   2/3
6. 6.

   Upright 10 | on its side 7 | on its cap 3. Bo flipped a water bottle 20 times. Based on the tally, what is the estimated chance that the next flip lands on its cap, as a decimal?

   0.15
7. 7.

   Upright 6 | on its side 13 | on its cap 6. Jun flipped a water bottle 25 times. Based on the tally, what is the estimated chance that the next flip lands upright, as a percent?

   24
8. 8.

   Sprouted 36 | did not sprout 14. Kira planted 50 seeds in a garden bed. Based on the tally, what is the estimated chance that a seed sprouts, as a percent?

   72
9. 9.

   Luz flipped a water bottle 20 times, and it landed on its side 5 times. About how many times should it land on its side in 100 flips?

   25
10. 10.

    Noah tossed a button 20 times, and it landed on its edge 3 times. About how many times should it land on its edge in 100 tosses?

    15